Renanthera John Losgar is a cross between R. imschootiana (big plant with humongous sprays of bright red flowers) and R. citrina (small plant with sprays of creamy yellow flowers). Because of the opposite colors of the parents, there is variation in flower color (see example pictures). The plants I have are small-medium in stature and have bloomed on the redder side with good spots on the lower sepals. No matter what, though, Renantheras do not disappoint when it comes to flowers. Blooms late winter to spring; flowers are long-lasting but not fragrant. Plants are typically grown in baskets, but will do well in pots with coarse medium, too.
Super easy! Give moderate to high light, intermediate to hot temperatures, and water like a vanda. Plants can be kept in pots, if preferred, otherwise they do very well in a basket. Growers in drier climates will benefit from coarse bark in the basket to help maintain humidity around the roots.